Removing and replacing a scuba mask is the skill that most new divers worry about. However with a few simple steps you can master this skill.
Mask clearing:
Before you learn to remove and replace your mask completely you should practice clearing the mask until you are comfortable with this skill. Remember – when clearing scuba masks start breathing out before you tilt your head up to prevent water going up your nose.
The magic snorkel:
To prepare in advance for the mask removal you can practice at home with a snorkel. Fill a basin with COLD water and place …
And it’s much more effective than working out and re-strengthening on dry land, where the body can be jolted by its own weight. Take a look at the short list of injuries and conditions below and see how working out in water can take a lot of the pain out of rehabilitation. 
Being slim is no guarantee for having a flat stomach. Just walk around the beach on a hot summer day and observe the number of thin people with mild to extreme pot bellies. Being underweight does not mean a slim physique or good health. If you want to firm up your waist line, strengthen your back and trim that spare tire, read on.